Button-sewing machine.



D. NOBLE.

BUTTON SEWING MACHINE. APPLICATION FILED JULY 30.1914.

Patented A110". 7, 1917.

4 SHEETSSHEET I.

WITNESSES:

A TTORNE Y D. NOBLE.

BUTTON SEWING MACHINE.

APPLICATION FILED IULY 30,1914.

III/Ill? 4 Patented Aug. 7,1917.

- 4 SHEETSSHEET 2.

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A TTORNE Y NOBLE BUTTON SEWING MACHINE. APPLICATION FILED JULY 30.1914.

Patented Aug. 7, 1917.

4 SHEETS-SHEET 3.

W J I A TTOR/VEY D. NOBLE.. BUTTQN SEWING MACHINE. APPLICATION FILEDJULY 30, I914.

Patented Aug. 7, 1917.

9 9 SHEET s E T 4 A TTOR/VE Y DONALD NOBLE, OF BRIDGEPORT, CONNECTICUT,ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY, A CORPORATION OF NEWJERSEY.

BUTTON-SEWING MACHINE.

Specification of Letters Patent.

Patented Aug. 7, 1917.

Application filed July 30, 1914. Serial No. 854,011.

To all whom it may concern:

Be it known that I, DONALD NOBLE, a citizen of the United States,residing at Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements inButton-Sewing Machines, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to improvements in button sewing machines and hasfor its primary object to provide a simple, durable and compactconstruction designed more particularly for use in connection with theretail shoe trade, and to this end there is provided an oscillatingcylinder carrying the stitchforming elements and controlled to effectsuperposed zigzag stitches, and if desired place tying stitches at thecommencement and at the completion of the cycle of stitch formation,which latter is controlled by a suitable stop motion mechanism,preferably as herein shown, which comprises the subjcct matter of myUnited States patent application Serial No. 854,012, filed July 30,1914.

Referring to the drawings, Figures 1 and 2 are front and rear endelevations respectively, of the present construction of sewing machineincluding thestop-motion mechanism. Figs. 3 and 4 right and left handelevations of Fig. 1 respectively, Fig. 4 being shown partially insection to better expose certain parts later to be referred to. Fig. 5aplan of Fig. 1 showing the throatplate detached from the machine. Figs.6 and 7 cross sections on lines AA and B-B, respectively of Fig. 4. Fig.8 a central cross section on the line CC, Fig. 2. Fig. 9 a cross sectionon the line D-D, Fig. 4. Fig. 10, detail views of the elementscomprising the button clamp. Fig. 11 a view illustrating the relativearrangement of the button clamp, throat-plate, button and material atthe commencement of the stitching operation. Fig. 12 a plan view ofcertain of the elements of the auxiliary brake-shoe actuating mechanism.later to be referred to.

Referring to the figures 1 represents the sewing machine frame; 2 itsbase; 3 the main or needle-bar actuating shaft surrounded by a hub 011which is mounted the belt or hand wheel 4 to rotate with orindependently of said shaft; 5 the needle thread take-up mounted tovibrate on the pivot screw 6 and actuated by the grooved cam 7 carriedby the main-shaft 3; 8, 9, 10 and 11 denote thread leaders; 12'threadtension; 13 thread con troller spring and 14 the tension releasing armcomprising an extension of the rock shaft 15 secured by screws, as 16,in the lug 17 of the button-clamp rock-arm 18 provided with the buttonclamp 19, the rock-shaft 15 being loosely mounted in suitable bearingsformed in the lugs, as 20, of the frame cap 21 secured by screws, as 22,1 only of which is shown) to the frame 1, thus causing the arm 14 to berocked by the movements of the rock-arm 18.

23 represents the loop-taker provided with the thread-bobbin 24 andcarried by the loop-taker shaft 25, which latter has suitably securedupon it a spirally grooved gear member 26 tracked by a hollow gearmember 27 forming a part of a cross-head 28 whose oppositely arrangedmember 29 is suitably secured to the needle-bar 30, the latter mountedto reciprocate in suitable bearings carried by the oscillating frame 31,the upper end of said needle-bar being provided with a needle carryingbracket 32 into the free end of which is suitably secured the needle 33.The oscillating frame 31 is carried by shaft 34 mounted in a bearingsleeve 35 suitably secured in the frame 1 and held against endwisemovement by a suitably secured collar 36, the cross-head 28 beingactuated from the main-shaft 3 through the shaft flange 37, wristpin 38and two part crank connection 39, thus transmitting oscillatorymovements to the loop-taker 23 and reciprocating movements to theneedle-bar 30. 4O denotes the throat or needle-plate.

41 represents the oscillating frame shaft (see Fig. 4) mounted at itsforward end in a bearing 42 formed in the frame 1 and at its oppositeend in a bearing 43 formed in a lug 44 of the base 2, said shaftcarrying at its forward end a flange 45 provided with an inclined groove46 terminating in an open ing 47 (see Fig. 9), its opposite end beingprovided with an eccentric 48 secured by screw 49. 50 denotes agear-member mountedon the shaft41 and held to turn the latter by screw51 threaded into theeccentric 48, said geanmember meshing with agearmember carried by the cam 7, the gearmembers 50 and 52 being of theratio of two to one, thus giving to the shaft 41 one rotation to tworotations of the shaft 3.

53 represents a clutch operating shaft having a reduced portion 5st uponwhich is secured by screw 55 a flange 56 provided with a pin 57 and uponthe outer end of said reduced portion is mounted a triangular cam 58secured to turn with the shaft by screw 59 threaded into said flange. 60denotes a spring mounted on the reduced portion 5a and held confinedbetween the suitably secured collar 61 and the inner end wall 62 of theshaft 4C1, said spring acting to normally hold the pin 57 intoengagement with the opening 47 of the flange 45. 63 denotes a bracketsecured by screws, as 6 1, to the base 2 and provided with a circularopening 65 into the wall of which is formed a notch 66 for the receptionof the head of screw 55 when the flange 56 is in its outward or positionof rest, as shown in Fig. 4, thus locking the shaft 53 againstaccidental axial move ment, the notch 67 in the wall of the opening 65acting to receive the screw 55 when, through any fault, the drivingmechanism is operated in the wrong direction for a cycle of stitchformation.

68 represents a ratchet disk mounted to turn on the main-shaft bushing69 in a di-' rection opposite to the direction of rotation of themain-shaft, and to said disk is suitably secured a cam-disk 7 0 carryinga cambracket 71 provided with an incline 71 and cam-lug 72, the latterforming a part of the stop motion mechanism, later to be referred to. 73denotes an eccentric strap ac tuated by the eccentric &8 and operativelyconnected by pivot stud 7 4 with the ratchetlever 75 journaled on thehub 76 of the disk 68 and provided at its free end with a springcontrolled ratchet-pawl 77, a spring controlled retaining pawl 7 8mounted on a stud 79 secured in the frame 1 acting to hold the disk 68against accidental reverse rotation.

Referring more particularly to Figs. 2 and 8, 80 represents a buttonclamp operating rod provided at its lower end with a step 81 and mountedto move vertically in a tubular bracket 82 threaded into a lug 83 of theframe 1, said rod being surrounded by a spring 84E confined between theinner wall 85 of said bracket and a shoulder 86 formed on said rod, saidspring comprising a part of the stop motion mechanism, later to bereferred to. 87 denotes a spring controlled sleeve mounted to move withand independent of the rod 80, which latter carries a pin 88 and washer89 between which latter and the wall 90 of the sleeve 87 is confined aspring 91 which acts, through connections later to be described, toresiliently hold the clamp 19 down upon the material when the rod 80 ismoved upward, as when starting the machine.

92 represents a rock-arm the member 93 of which is provided with anopening 9 1 through which loosely passes the rod 80, the member 95 ofsaid rock-arm entering an opening 96 in the rear end of the rock-arm 18,thus operatively connecting the latter with the rod 80. 97 denotes awasher loosely mounted on the rod 80 and located between the member 93of the rock-arm 92 and an adjusting nut 98 for determining the relativeadjustment of the clamp 19 and throatplate 40, the nut 99 acting to lockthe nut 98 against accidental movement.

The button holding clamp comprises a main-frame 100 provided with a rib101 which enters a groove 102- in the front end of the rock-arm 18 andsecured by screw bolt 103 and nut 10%, the base portion 105 of saidclamp extending back under the free end of the rock-arm, the front orbutton holding portion of said base being provided with a needle opening106 and at its under side cut away to accommodate the latch 107pivotally secured by screw 108 and yieldingly held in engagement withthe buttoneye by spring 109. 110 denotes a needlethread cutting andholding blade secured to the rock-arm 18 by the bolt 103 and nut 104:,the thread 111 being passed from the needleeye, out and held as shown inFig. a.

Upon the extended portion 112 of the throat-plate 10 is secured by screw113 an under thread cutting and thread holding blade 114, the thread 115leading from the bobbin 24tthrough its needle-opening 116 and beneaththe cutting blade as shown in Fig. 5, the throat-plate being held inposition on the flanges, as 117, of the plate 21 by the beveled edges,as 118, underlying the like beveled edges, as 119, carried by the latterplate, and further secured by the pins, as 120, entering the openings,as 121, in said throat-plate, the surface 122 being depressed toaccommodate the lowering of the button down upon the material. 123denotes a cover plate on which is mounted the thread leaders 8, 9, 10,thread tension 12, thread controller-spring -3 and secured to the frame1 by thumb-screw 124.

Referring now to the means (stop motion mechanism) for controlling thecycle of stitch formation, the band-wheel 4: at its inner side ishollowed out as shown at 125, Fig. d and into the inner portion of itsrim is secured by screws, as 126, a leather ring 127, and at one side ofthe latter is loosely mounted a disk 128 normally held in grippingrelationship with said leather by screws, as 129, passing looselythrough the gripping disk 130 and resiliently held in contact with theleather by springs as 131 confined between the walls, as 132, and beneath the heads .of the'screws 129, said springs being represented by asingle cross section, Fig. 41, the disk 130 being secured to themain-shaft 8 by screwaas 133, (shown in dotted lines only, Fig. 7). 134;denotes suitable bearings, as 154.

a compression ring loosely mounted on the inner hub 135 of the disk 130and provided with a multiple of compression pins as 136 (one only beingshown, Fig. 4) and having a beveled periphery 137. A second disk 138provided with a beveled periphery 139 is secured to the hub 135 byscrews, as 140, the outer hub 141 of the disk 130 acting as a bearingfor the bandwheel 4.

142 represents a brake-shoe rock-shaft mounted in suitable bearingsformed in the frame 1 and carrying at one end a sleeve 143 provided withoppositely arranged lugs, as 144, which have pivotally connected to themlinks, as 145. The opposite ends of the links 145 are pivotallyconnected to brake-levers, as 146, whose lower ends are pivoted uponsuitable studs, as 147, secured in the franie 1, said levers beingprovided with brake-shoes, as 148, carried by stud screws, as 149,threaded into bosses, as 150, formed integral. with said levers, saidstudscrews being secured against accidental movement by nuts, as 151. I

152 represents a brake actuating lever formed integral with the sleeve143 which, when moved upward by an element later to be referred to, actsto move the brakeshoes clear of the beveled surfaces 137 and 139 of thedisks 134 and 138, respectively, as when effecting the stitchingoperation.

152 represents a treadle-rod whose lower end, in practice, is attachedto a suitable foot-treadle (not shown) and on said rod is suitablysecured an arm or lug 153, said rod being guided in its verticalmovements by The upward movement of the rod 152 causes the lug 153 toraise the lever 152 and rock the shaft 142, thus releasing thebrake-shoes 148 from engagement with the beveled surfaces 137 and 139,th lever 152 when elevated rests on the shoulder 1560f the catch lever157 pivoted upon studscrew 158 threaded into the frame 1, said catchlever being yield ingly held in engagement with the lever 152 by thespring controlled plunger 159 mounted in the frame 1.

To better adapt the previously described stop-motion mechanism toextreme variations in speed there is employed an auxiliary brake-shoeactuating mechanism comprising the sleeve 160 loosely mounted on thebrakeshoe rock-shaft 142 and provided with integrally formed arms 161and 162, the arm 1.61 carrying at its outer end a link 163 slidablyconnected by screw 164 with the lug 153 carried by the treadle-rod 152.165 denotes a crank arm formed integral with the shaft 142 and to itslower end is pivotally attached by screw 166 a brake-pawl 167 providedwith a stop wall 168 and finger 169, which latter during the stitchingoperation rests upon the pin 170 secured in the frame, and when not sopositioned occupies the position shown in Fig. 1 with its wall 168 inengagement with the wall 171 of the shaft flange 37. 172 denotes a linkpivotally attached at one end to the brake-pawl 167 and at its oppositeend to the arm 162 carried by the sleeve 160, said link acting to liftthe pawl 167 out of engagement with the flange 37 when starting themachine. 173 denotes a buttonholding wire secured in the cap 21 by screw174 and 175 represents an irregularly formed circular spring ringlocated between the disks 134 and 138 to keep them from contacting, eachwith the other, when not acted on by the brakeshoes 148.

The sequence of movements of the actuat ing mechanism as previouslypointed out are as follows: Supposing the machine to be at rest asillustrated more particularly in Figs. 1 to 5 inclusive with the lug 72of the disk 70 slightly past the lower end of the catch-lever 157, theend of the clutch opera-ting shaft 53 in central engagement with thecam-bracket 71, the brake-shoes 148 in engagement with th beveledsurfaces 137 and 139, the pawl 167 in engagement with the flange 37, thepin 57 of the flange 56 out of engagement with the opening 47 of theflange 45, the button clamp 19 raised with a button in position to bestitched to the material, and the tension release lever14 in engagementwith the tension mechanism 12 to release the tension on theneedle-thread, which is the relative position of the several parts whenstarting the stitching operation.

An upward movement of the treadle-rod causes the lug 153 to contact withthe levers 152 and 161, and in their upward movements the lever 152first contacts the step 81 which causes the clamp operating rod 80 toclose the clamp 19 down upon the material, the tension releasing arm 14to be withdrawn from the tension mechanism 12 and at the same time rockthe shaft 142, which causes the brake-shoes 148 to release the disks 134and 138 and permit the springs 131 to force the disk 128 in drivingcontact with the leather-ring 127, the lever 152 in the meantime beingpositioned on the shoulder 156 of the catch-lever 157 where it remainsduring the cycle of stitchformation. The rocking upward of the lever 161effects through the connections 160, 162, 165 and 172 a rocking andlateral movement of the brake-pawl 167 which causes its finger 169 to bepositioned upon the pin 170, where it remains during the cycle ofstitchformation.

The machine having been set in motion as just described, the pin 57 isheld out of ngagement with the opening 47 in the disk until thecam-bracket 71 passes the end of the shaft 53, during which time tyingstitches are being placed, and after the cam bracket passes out ofengagement with the end of the shaft 53 the spring 60 acts to couple thedisks 15 and. 56, thus effecting, through the triangular cam 58,oscillatory movements of the frame 31, and in the further cycle ofstitch formation the cam portion 71 of th cam-bracket 71 is brought intoengagement with the end of the shaft 53, thus effecting tying stitchesat the completion of the cycle of stitch-formation, and after the cambracket has passed the shaft 53 for substantially half its length, thelug 72 carried by the disk 138 contacts the lower end of the catch-lever157 and withdraws the shoulder 156 from engagement with the lever 152,thus permitting the parts to take their positions of rest followed bythe neXt subsequent cycle of stitch-formation.

The function of the auxiliary stop mechanism, as will be readilyunderstood, is to cause the momentum of the parts to assist the spring84: in applying the brake-1nembers 148 to the beveled surfaces 137 and139.

Having thus set forth the nature of the invention, what I claim hereinis 1. In a sewing machine, a stitch-forming mechanism for effectingzigzag and tying stitches including a throat plate, a needle carryingbar, a loop-taker and an oscillating frame arranged below saidthroat-plate and in which are mounted below the latter said needlecarrying bar and loop-taker, and means including a cam member for givingto said frame its oscillatory movement.

2. In a sewing machine, a stitch-forming mechanism for effecting zigzagand tying stitches including a throat-plate, a needle carrying bar, aloop-taker and an oscillating frame arranged below said throat-plate andin which are mounted below the latter said needle carrying bar andloop-taker, and means including a cam member for changing the characterof the stitches during a single cycle of operation.

3. In a button sewing machine, a clamp for holding the button beingacted on against movement during the stitching operation, a frame-baseupon which is mounted a vertically arranged frame provided with athroat-plate and having pivotally attached to it a vertically arrangedoscillating frame arranged belou said throat-plate in which are mountedbelow the latter a needle carrying bar and a loop-taker, and meansincluding a cam member forgiving to said frame its oscillatorymovements.

4. In a sewing machine for effecting superposed zigzag and tyingstitches, a stitchforming mechanism including a throat-plate, a needle,a needle carrying bar, a loop-taker, and an oscillating frame arrangedbelow said throat-plate and in which are mounted below the latter saidneedle carrying bar and loop-taker, and means for giving to said needlecarrying bar and loop-taker stitchforming movements and means includinga cam member for effecting and suspending the oscillatory movements ofsaid oscillating frame during a single cycle of stitch-formation. a

5. In a. button sewing machine, a clamp for holding the button beingacted 011 against movement during the stitching operation, astitch-forming mechanism including a throat-plate, a' needle, a needlecarrying bar, a loop-taker, and an oscillating frame arranged below saidthroat-plate and in which are mounted below the latter, said needlecarrying bar and loop-taker, and means including a cam member for givingto said frame its oscillatory movements, means including a crankconnection for giving to said needle carrying bar and loop-takerstitch-forming movements and means for automatically determining thecycle of stitch-formation, 6. In a sewinginachine for effecting superposed zigzag stitches, a stitch-forming mech anism including athroat-plate, a needle, a needle carrying bar, a loop-taker, and anoscillating frame in which said needle carrying bar and loop-taker aremounted'an-d con trolled to superpose the zigzag stitches, and means forgiving to said needle-carrying bar and loop-taker stitch-formingmovements and means including an intermittently actuated cam forefiecting and suspending the oscillatory movements of said oscillatingframe during a single cycle of stitch-formatipn.

7. In a sewing machine for effecting zigzag stitches, a frame base uponwhich is mounted a vertically arranged frame pro- 1 vided with athroat-plate and having pivotally attached to said frame a verticallyarranged oscillating frame arranged below said throat plate and in whichare mounted below the latter a needle carrying bar and a loop-taker,means including a cam member acting on said oscillating frame tosuperpose the zigzag stitches, of a button holding clamp automaticallycontrolled to raise the materialsbeing acted on off said throatplate atthe completion of the cycle of stitchformation.

8. In a button sewing machine, the c0mbination with a stitch-formingmechanism including a main-shaft, a throat-plate, a cam member, aneedle, a needle carrying bar, a loop-taker, and an oscillating framearranged below said throat-plate in which are mounted below the lattersaid needle carrying bar and loop-taker and a clamp for holding thebutton being acted on against movement during the stitching operation,of a cam-shaft driven from said main-shaft and operatively connected bysaid cam-member with said oscillating frame for giving to the latteroscillatory movements.

9. In a button sewing machine, the combination with a stitch-formingmechanism including a throat-plate, a needle, a needle carrying bar, aneedle thread tension, a tension releasing element, a loop-taker, and anoscillating frame, the latter arranged below said throat-plate and inwhich are mounted below the latter said needle carrying bar andloop-taker, means including a cam memher for giving to said frame itsoscillatory movement, and means for actuating said stitch-formingelements, of a rock-arm provided with a button holding clamp, themovements of said rock-arm in one direction acting on said releasingelement to release the tension on the needle thread and its re turnmovement acting to restore said thread tension.

10. In a button sewing machine, the combination with a stitch-formingmechanism including a throatplate, a needle, a needle carrying bar, aloop-taker, and an oscillating frame arranged below said throat-plateand in which are mounted below the latter said needle carrying bar andloop-taker and a triangular cam through which said frame is controlledto effect zigzag stitches intermediate separate series of tying stitchesduring a single cycle of stitch formation, of a button clamp carryingarm mounted on a stationary part of the sewing machine for presenting abutton to the action of said stitch-forming mechanism.

11. In a sewing machine, a stitch-forming mechanism for effecting zigzagstitches including a throat-plate, a needle carrying bar, a loop-taker,a cam member and an oscillating frame arranged below said throatplateand in which are mounted below the latter said needle carrying bar andlooptaker, said cam member acting to give to said frame its oscillatorymovements.

In testimony whereof, I have signed my name to this specification, inthe presence or two subscribing witnesses.

DONALD NOBLE.

Witnesses:

FRANK M. WVooT'roN, E. II. Woons.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

It is hereby certified that in Letters Patent No. 1,235,836, grantedAugust 7 1917, upon the application of Donald Noble, of Bridgeport,Connecticut, for an improvement in Button-Sewing Machines, an errorappears in the printed specification requiring correction as follows:Page 4, line 26, claim 1, strike out the Words and tying; and that thesaid Letters Patent should be read with this correction therein that thesame may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of October, A. D., 1917.

[SEAL] F. W. H. CLAY,

Acting Commissioner of Patents. Cl. 112-32.

